... & gas line Standard: API 5L Grade : API 5L ASTM A53/A106 GR.B Size: OD10.3-610 mm,(1 ... pipe ,oil & gas pipe line Brand Tiger steelStandard ASTM A53,BS1387-1985,DIN2440,GB/T3091-2008,EN39,BS1139Material ... Carbon steel :ASTM A 53/A106 GR,B ,X42.X52. Q195, ... Africa, etc.Contact Person Amanda Cui 15563512134 API 5L ASTM A 53/A106 Gr.B seamless steel tube,line ...